title: Non-Hodgkin's malignant lymphomas of upper digestive and respiratory tracts.
mesh_terms: D006258:Head and Neck Neoplasms / Q000473:pathology* / Q000532:radiotherapy* / Q000628:therapy; D006801:Humans; D008223:Lymphoma / Q000473:pathology* / Q000532:radiotherapy / Q000628:therapy; D011379:Prognosis; D011882:Radiotherapy, High-Energy